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20.3.5.6 YEARS_REG Register (offset = 14h) [reset = 0h]
YEARS_REG is shown in Figure 20-66 and described in Table 20-69.
The YEARS_REG is used to program the year value of the current date. The year value is represented by
only the last 2 digits and is stored as BCD format. In BCD format, the decimal numbers 0 through 9 are
encoded with their binary equivalent. The year 1979 is programmed as 79 with YEAR0 set as 9 and
YEAR1 set as 7.
Figure 20-66. YEARS_REG Register
31 30 29 28 27 26 25 24
Reserved
R-0h
23 22 21 20 19 18 17 16
Reserved
R-0h
15 14 13 12 11 10 9 8
Reserved
R-0h
7 6 5 4 3 2 1 0
YEAR1 YEAR0
R/W-0h R/W-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 20-69. YEARS_REG Register Field Descriptions
Bit Field Type Reset Description
31-8 Reserved R 0h
7-4 YEAR1 R/W 0h
2nd digit of years, Range is 0 to 9
3-0 YEAR0 R/W 0h
1st digit of years, Range is 0 to 9
3639
SPRUH73H–October 2011–Revised April 2013 Timers
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